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bae7f79e ILT |
1 | // options.c -- handle command line options for gold |
2 | ||
6cb15b7f ILT |
3 | // Copyright 2006, 2007 Free Software Foundation, Inc. |
4 | // Written by Ian Lance Taylor <iant@google.com>. | |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
bae7f79e ILT |
23 | #include <iostream> |
24 | ||
25 | #include "gold.h" | |
26 | #include "options.h" | |
27 | ||
61ba1cf9 ILT |
28 | namespace gold |
29 | { | |
30 | ||
bae7f79e ILT |
31 | // The information we keep for a single command line option. |
32 | ||
61ba1cf9 | 33 | struct options::One_option |
bae7f79e ILT |
34 | { |
35 | // The single character option name, or '\0' if this is only a long | |
36 | // option. | |
37 | char short_option; | |
38 | ||
39 | // The long option name, or NULL if this is only a short option. | |
40 | const char* long_option; | |
41 | ||
42 | // Description of the option for --help output, or NULL if there is none. | |
43 | const char* doc; | |
44 | ||
45 | // How to print the option name in --help output, or NULL to use the | |
46 | // default. | |
47 | const char* help_output; | |
48 | ||
49 | // Long option dash control. This is ignored if long_option is | |
50 | // NULL. | |
51 | enum | |
52 | { | |
53 | // Long option normally takes one dash; two dashes are also | |
54 | // accepted. | |
55 | ONE_DASH, | |
56 | // Long option normally takes two dashes; one dash is also | |
57 | // accepted. | |
58 | TWO_DASHES, | |
59 | // Long option always takes two dashes. | |
60 | EXACTLY_TWO_DASHES | |
61 | } dash; | |
62 | ||
63 | // Function for special handling, or NULL. Returns the number of | |
64 | // arguments to skip. This will normally be at least 1, but it may | |
65 | // be 0 if this function changes *argv. ARG points to the location | |
66 | // in *ARGV where the option starts, which may be helpful for a | |
67 | // short option. | |
61ba1cf9 | 68 | int (*special)(int argc, char** argv, char *arg, Command_line*); |
bae7f79e ILT |
69 | |
70 | // If this is a position independent option which does not take an | |
71 | // argument, this is the member function to call to record it. | |
61ba1cf9 | 72 | void (General_options::*general_noarg)(); |
bae7f79e ILT |
73 | |
74 | // If this is a position independent function which takes an | |
75 | // argument, this is the member function to call to record it. | |
61ba1cf9 | 76 | void (General_options::*general_arg)(const char*); |
bae7f79e ILT |
77 | |
78 | // If this is a position dependent option which does not take an | |
79 | // argument, this is the member function to call to record it. | |
61ba1cf9 | 80 | void (Position_dependent_options::*dependent_noarg)(); |
bae7f79e ILT |
81 | |
82 | // If this is a position dependent option which takes an argument, | |
83 | // this is the member function to record it. | |
61ba1cf9 | 84 | void (Position_dependent_options::*dependent_arg)(const char*); |
bae7f79e ILT |
85 | |
86 | // Return whether this option takes an argument. | |
87 | bool | |
88 | takes_argument() const | |
89 | { return this->general_arg != NULL || this->dependent_arg != NULL; } | |
90 | }; | |
91 | ||
61ba1cf9 | 92 | class options::Command_line_options |
bae7f79e ILT |
93 | { |
94 | public: | |
95 | static const One_option options[]; | |
96 | static const int options_size; | |
97 | }; | |
98 | ||
61ba1cf9 ILT |
99 | } // End namespace gold. |
100 | ||
bae7f79e ILT |
101 | namespace |
102 | { | |
103 | ||
61ba1cf9 ILT |
104 | // Handle the special -l option, which adds an input file. |
105 | ||
106 | int | |
107 | library(int argc, char** argv, char* arg, gold::Command_line* cmdline) | |
108 | { | |
109 | return cmdline->process_l_option(argc, argv, arg); | |
110 | } | |
111 | ||
ead1e424 ILT |
112 | // Handle the special --start-group option. |
113 | ||
114 | int | |
115 | start_group(int, char**, char* arg, gold::Command_line* cmdline) | |
116 | { | |
117 | cmdline->start_group(arg); | |
118 | return 1; | |
119 | } | |
120 | ||
121 | // Handle the special --end-group option. | |
122 | ||
123 | int | |
124 | end_group(int, char**, char* arg, gold::Command_line* cmdline) | |
125 | { | |
126 | cmdline->end_group(arg); | |
127 | return 1; | |
128 | } | |
129 | ||
bae7f79e ILT |
130 | // Report usage information for ld --help, and exit. |
131 | ||
132 | int | |
133 | help(int, char**, char*, gold::Command_line*) | |
134 | { | |
135 | printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name); | |
136 | ||
137 | const int options_size = gold::options::Command_line_options::options_size; | |
138 | const gold::options::One_option* options = | |
139 | gold::options::Command_line_options::options; | |
140 | for (int i = 0; i < options_size; ++i) | |
141 | { | |
142 | if (options[i].doc == NULL) | |
143 | continue; | |
144 | ||
145 | printf(" "); | |
146 | int len = 2; | |
147 | bool comma = false; | |
148 | ||
149 | int j = i; | |
150 | do | |
151 | { | |
152 | if (options[j].help_output != NULL) | |
153 | { | |
154 | if (comma) | |
155 | { | |
156 | printf(", "); | |
157 | len += 2; | |
158 | } | |
159 | printf(options[j].help_output); | |
160 | len += std::strlen(options[i].help_output); | |
a6badf5a | 161 | comma = true; |
bae7f79e ILT |
162 | } |
163 | else | |
164 | { | |
165 | if (options[j].short_option != '\0') | |
166 | { | |
167 | if (comma) | |
168 | { | |
169 | printf(", "); | |
170 | len += 2; | |
171 | } | |
172 | printf("-%c", options[j].short_option); | |
173 | len += 2; | |
a6badf5a | 174 | comma = true; |
bae7f79e ILT |
175 | } |
176 | ||
177 | if (options[j].long_option != NULL) | |
178 | { | |
179 | if (comma) | |
180 | { | |
181 | printf(", "); | |
182 | len += 2; | |
183 | } | |
184 | if (options[j].dash == gold::options::One_option::ONE_DASH) | |
185 | { | |
186 | printf("-"); | |
187 | ++len; | |
188 | } | |
189 | else | |
190 | { | |
191 | printf("--"); | |
192 | len += 2; | |
193 | } | |
194 | printf("%s", options[j].long_option); | |
195 | len += std::strlen(options[j].long_option); | |
a6badf5a | 196 | comma = true; |
bae7f79e ILT |
197 | } |
198 | } | |
199 | ++j; | |
200 | } | |
201 | while (j < options_size && options[j].doc == NULL); | |
202 | ||
a6badf5a | 203 | if (len >= 30) |
bae7f79e ILT |
204 | { |
205 | printf("\n"); | |
206 | len = 0; | |
207 | } | |
208 | for (; len < 30; ++len) | |
209 | std::putchar(' '); | |
210 | ||
211 | std::puts(options[i].doc); | |
212 | } | |
213 | ||
214 | gold::gold_exit(true); | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
61ba1cf9 ILT |
219 | } // End anonymous namespace. |
220 | ||
221 | namespace gold | |
222 | { | |
bae7f79e ILT |
223 | |
224 | // Helper macros used to specify the options. We could also do this | |
225 | // using constructors, but then g++ would generate code to initialize | |
226 | // the array. We want the array to be initialized statically so that | |
227 | // we get better startup time. | |
228 | ||
229 | #define GENERAL_NOARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 230 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
231 | NULL, func, NULL, NULL, NULL } |
232 | #define GENERAL_ARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 233 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
234 | NULL, NULL, func, NULL, NULL } |
235 | #define POSDEP_NOARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 236 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
237 | NULL, NULL, NULL, func, NULL } |
238 | #define POSDEP_ARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 239 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
240 | NULL, NULL, NULL, NULL, func } |
241 | #define SPECIAL(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 242 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
243 | func, NULL, NULL, NULL, NULL } |
244 | ||
245 | // Here is the actual list of options which we accept. | |
246 | ||
61ba1cf9 ILT |
247 | const options::One_option |
248 | options::Command_line_options::options[] = | |
bae7f79e | 249 | { |
61ba1cf9 | 250 | SPECIAL('l', "library", N_("Search for library LIBNAME"), |
a6badf5a | 251 | N_("-lLIBNAME, --library LIBNAME"), TWO_DASHES, |
61ba1cf9 | 252 | &library), |
ead1e424 ILT |
253 | SPECIAL('(', "start-group", N_("Start a library search group"), NULL, |
254 | TWO_DASHES, &start_group), | |
255 | SPECIAL(')', "end-group", N_("End a library search group"), NULL, | |
256 | TWO_DASHES, &end_group), | |
a6badf5a ILT |
257 | GENERAL_NOARG('E', "export-dynamic", N_("Export all dynamic symbols"), |
258 | NULL, TWO_DASHES, &General_options::set_export_dynamic), | |
dbe717ef ILT |
259 | GENERAL_ARG('I', "dynamic-linker", N_("Set dynamic linker path"), |
260 | N_("-I PROGRAM, --dynamic-linker PROGRAM"), TWO_DASHES, | |
261 | &General_options::set_dynamic_linker), | |
bae7f79e ILT |
262 | GENERAL_ARG('L', "library-path", N_("Add directory to search path"), |
263 | N_("-L DIR, --library-path DIR"), TWO_DASHES, | |
61ba1cf9 | 264 | &General_options::add_to_search_path), |
652ec9bd ILT |
265 | GENERAL_ARG('m', NULL, N_("Ignored for compatibility"), NULL, ONE_DASH, |
266 | &General_options::ignore), | |
ca3a67a5 ILT |
267 | GENERAL_ARG('O', NULL, N_("Optimize output file size"), |
268 | N_("-O level"), ONE_DASH, | |
269 | &General_options::set_optimization_level), | |
61ba1cf9 ILT |
270 | GENERAL_ARG('o', "output", N_("Set output file name"), |
271 | N_("-o FILE, --output FILE"), TWO_DASHES, | |
272 | &General_options::set_output_file_name), | |
bae7f79e | 273 | GENERAL_NOARG('r', NULL, N_("Generate relocatable output"), NULL, |
61ba1cf9 | 274 | ONE_DASH, &General_options::set_relocatable), |
15b3cfae | 275 | GENERAL_ARG('R', "rpath", N_("Add DIR to runtime search path"), |
41f542e7 ILT |
276 | N_("-R DIR, -rpath DIR"), ONE_DASH, |
277 | &General_options::add_to_rpath), | |
7da52175 | 278 | GENERAL_NOARG('\0', "eh-frame-hdr", N_("Create exception frame header"), |
192f9b85 | 279 | NULL, TWO_DASHES, &General_options::set_create_eh_frame_hdr), |
15b3cfae ILT |
280 | GENERAL_ARG('\0', "rpath-link", |
281 | N_("Add DIR to link time shared library search path"), | |
282 | N_("--rpath-link DIR"), TWO_DASHES, | |
283 | &General_options::add_to_rpath_link), | |
92e059d8 ILT |
284 | GENERAL_NOARG('\0', "shared", N_("Generate shared library"), |
285 | NULL, ONE_DASH, &General_options::set_shared), | |
bae7f79e | 286 | GENERAL_NOARG('\0', "static", N_("Do not link against shared libraries"), |
61ba1cf9 | 287 | NULL, ONE_DASH, &General_options::set_static), |
51dee2fe ILT |
288 | GENERAL_ARG('\0', "sysroot", N_("Currently ignored"), NULL, TWO_DASHES, |
289 | &General_options::ignore), | |
dbe717ef | 290 | POSDEP_NOARG('\0', "as-needed", |
a6badf5a | 291 | N_("Only set DT_NEEDED for dynamic libs if used"), |
dbe717ef ILT |
292 | NULL, TWO_DASHES, &Position_dependent_options::set_as_needed), |
293 | POSDEP_NOARG('\0', "no-as-needed", | |
a6badf5a | 294 | N_("Always DT_NEEDED for dynamic libs (default)"), |
dbe717ef | 295 | NULL, TWO_DASHES, &Position_dependent_options::clear_as_needed), |
4973341a ILT |
296 | POSDEP_NOARG('\0', "whole-archive", |
297 | N_("Include all archive contents"), | |
298 | NULL, TWO_DASHES, | |
299 | &Position_dependent_options::set_whole_archive), | |
300 | POSDEP_NOARG('\0', "no-whole-archive", | |
301 | N_("Include only needed archive contents"), | |
302 | NULL, TWO_DASHES, | |
303 | &Position_dependent_options::clear_whole_archive), | |
bae7f79e ILT |
304 | SPECIAL('\0', "help", N_("Report usage information"), NULL, |
305 | TWO_DASHES, &help) | |
306 | }; | |
307 | ||
61ba1cf9 | 308 | const int options::Command_line_options::options_size = |
bae7f79e ILT |
309 | sizeof (options) / sizeof (options[0]); |
310 | ||
311 | // The default values for the general options. | |
312 | ||
61ba1cf9 | 313 | General_options::General_options() |
a6badf5a ILT |
314 | : export_dynamic_(false), |
315 | dynamic_linker_(NULL), | |
dbe717ef | 316 | search_path_(), |
ca3a67a5 | 317 | optimization_level_(0), |
61ba1cf9 ILT |
318 | output_file_name_("a.out"), |
319 | is_relocatable_(false), | |
7da52175 | 320 | create_eh_frame_hdr_(false), |
4973341a | 321 | rpath_(), |
15b3cfae | 322 | rpath_link_(), |
92e059d8 | 323 | is_shared_(false), |
61ba1cf9 | 324 | is_static_(false) |
bae7f79e ILT |
325 | { |
326 | } | |
327 | ||
328 | // The default values for the position dependent options. | |
329 | ||
61ba1cf9 | 330 | Position_dependent_options::Position_dependent_options() |
4973341a ILT |
331 | : do_static_search_(false), |
332 | as_needed_(false), | |
333 | include_whole_archive_(false) | |
bae7f79e ILT |
334 | { |
335 | } | |
336 | ||
dbe717ef ILT |
337 | // Input_arguments methods. |
338 | ||
339 | // Add a file to the list. | |
340 | ||
341 | void | |
342 | Input_arguments::add_file(const Input_file_argument& file) | |
343 | { | |
344 | if (!this->in_group_) | |
345 | this->input_argument_list_.push_back(Input_argument(file)); | |
346 | else | |
347 | { | |
a3ad94ed ILT |
348 | gold_assert(!this->input_argument_list_.empty()); |
349 | gold_assert(this->input_argument_list_.back().is_group()); | |
dbe717ef ILT |
350 | this->input_argument_list_.back().group()->add_file(file); |
351 | } | |
352 | } | |
353 | ||
354 | // Start a group. | |
355 | ||
356 | void | |
357 | Input_arguments::start_group() | |
358 | { | |
a3ad94ed | 359 | gold_assert(!this->in_group_); |
dbe717ef ILT |
360 | Input_file_group* group = new Input_file_group(); |
361 | this->input_argument_list_.push_back(Input_argument(group)); | |
362 | this->in_group_ = true; | |
363 | } | |
364 | ||
365 | // End a group. | |
366 | ||
367 | void | |
368 | Input_arguments::end_group() | |
369 | { | |
a3ad94ed | 370 | gold_assert(this->in_group_); |
dbe717ef ILT |
371 | this->in_group_ = false; |
372 | } | |
373 | ||
ead1e424 | 374 | // Command_line options. |
bae7f79e | 375 | |
61ba1cf9 | 376 | Command_line::Command_line() |
dbe717ef | 377 | : options_(), position_options_(), inputs_() |
bae7f79e ILT |
378 | { |
379 | } | |
380 | ||
381 | // Process the command line options. | |
382 | ||
383 | void | |
61ba1cf9 | 384 | Command_line::process(int argc, char** argv) |
bae7f79e | 385 | { |
61ba1cf9 ILT |
386 | const int options_size = options::Command_line_options::options_size; |
387 | const options::One_option* options = | |
388 | options::Command_line_options::options; | |
bae7f79e ILT |
389 | bool no_more_options = false; |
390 | int i = 0; | |
391 | while (i < argc) | |
392 | { | |
393 | if (argv[i][0] != '-' || no_more_options) | |
394 | { | |
ead1e424 | 395 | this->add_file(argv[i], false); |
bae7f79e ILT |
396 | ++i; |
397 | continue; | |
398 | } | |
399 | ||
400 | // Option starting with '-'. | |
401 | int dashes = 1; | |
402 | if (argv[i][1] == '-') | |
403 | { | |
404 | dashes = 2; | |
405 | if (argv[i][2] == '\0') | |
406 | { | |
407 | no_more_options = true; | |
408 | continue; | |
409 | } | |
410 | } | |
411 | ||
412 | // Look for a long option match. | |
413 | char* opt = argv[i] + dashes; | |
414 | char first = opt[0]; | |
415 | int skiparg = 0; | |
416 | char* arg = strchr(opt, '='); | |
417 | if (arg != NULL) | |
418 | *arg = '\0'; | |
419 | else if (i + 1 < argc) | |
420 | { | |
421 | arg = argv[i + 1]; | |
422 | skiparg = 1; | |
423 | } | |
424 | ||
425 | int j; | |
426 | for (j = 0; j < options_size; ++j) | |
427 | { | |
428 | if (options[j].long_option != NULL | |
429 | && (dashes == 2 | |
430 | || (options[j].dash | |
61ba1cf9 | 431 | != options::One_option::EXACTLY_TWO_DASHES)) |
bae7f79e ILT |
432 | && first == options[j].long_option[0] |
433 | && strcmp(opt, options[j].long_option) == 0) | |
434 | { | |
435 | if (options[j].special) | |
436 | i += options[j].special(argc - 1, argv + i, opt, this); | |
437 | else | |
438 | { | |
439 | if (!options[j].takes_argument()) | |
440 | { | |
441 | arg = NULL; | |
442 | skiparg = 0; | |
443 | } | |
444 | else | |
445 | { | |
446 | if (arg == NULL) | |
447 | this->usage(_("missing argument"), argv[i]); | |
448 | } | |
449 | this->apply_option(options[j], arg); | |
450 | i += skiparg + 1; | |
451 | } | |
452 | break; | |
453 | } | |
454 | } | |
455 | if (j < options_size) | |
456 | continue; | |
457 | ||
458 | // If we saw two dashes, we need to see a long option. | |
459 | if (dashes == 2) | |
460 | this->usage(_("unknown option"), argv[i]); | |
461 | ||
462 | // Look for a short option match. There may be more than one | |
463 | // short option in a given argument. | |
464 | bool done = false; | |
465 | char* s = argv[i] + 1; | |
466 | ++i; | |
467 | while (*s != '\0' && !done) | |
468 | { | |
469 | char opt = *s; | |
470 | int j; | |
471 | for (j = 0; j < options_size; ++j) | |
472 | { | |
473 | if (options[j].short_option == opt) | |
474 | { | |
475 | if (options[j].special) | |
476 | { | |
477 | // Undo the argument skip done above. | |
478 | --i; | |
479 | i += options[j].special(argc - i, argv + i, s, this); | |
480 | done = true; | |
481 | } | |
482 | else | |
483 | { | |
484 | arg = NULL; | |
485 | if (options[j].takes_argument()) | |
486 | { | |
487 | if (s[1] != '\0') | |
488 | { | |
489 | arg = s + 1; | |
490 | done = true; | |
491 | } | |
492 | else if (i < argc) | |
493 | { | |
494 | arg = argv[i]; | |
495 | ++i; | |
496 | } | |
497 | else | |
498 | this->usage(_("missing argument"), opt); | |
499 | } | |
500 | this->apply_option(options[j], arg); | |
501 | } | |
502 | break; | |
503 | } | |
504 | } | |
505 | ||
506 | if (j >= options_size) | |
507 | this->usage(_("unknown option"), *s); | |
508 | ||
509 | ++s; | |
510 | } | |
511 | } | |
61ba1cf9 | 512 | |
dbe717ef | 513 | if (this->inputs_.in_group()) |
ead1e424 ILT |
514 | { |
515 | fprintf(stderr, _("%s: missing group end"), program_name); | |
516 | this->usage(); | |
517 | } | |
518 | ||
61ba1cf9 ILT |
519 | // FIXME: We should only do this when configured in native mode. |
520 | this->options_.add_to_search_path("/lib"); | |
521 | this->options_.add_to_search_path("/usr/lib"); | |
bae7f79e ILT |
522 | } |
523 | ||
524 | // Apply a command line option. | |
525 | ||
526 | void | |
61ba1cf9 ILT |
527 | Command_line::apply_option(const options::One_option& opt, |
528 | const char* arg) | |
bae7f79e ILT |
529 | { |
530 | if (arg == NULL) | |
531 | { | |
532 | if (opt.general_noarg) | |
533 | (this->options_.*(opt.general_noarg))(); | |
534 | else if (opt.dependent_noarg) | |
535 | (this->position_options_.*(opt.dependent_noarg))(); | |
536 | else | |
61ba1cf9 | 537 | gold_unreachable(); |
bae7f79e ILT |
538 | } |
539 | else | |
540 | { | |
541 | if (opt.general_arg) | |
542 | (this->options_.*(opt.general_arg))(arg); | |
543 | else if (opt.dependent_arg) | |
544 | (this->position_options_.*(opt.dependent_arg))(arg); | |
545 | else | |
61ba1cf9 | 546 | gold_unreachable(); |
bae7f79e ILT |
547 | } |
548 | } | |
549 | ||
ead1e424 ILT |
550 | // Add an input file or library. |
551 | ||
552 | void | |
553 | Command_line::add_file(const char* name, bool is_lib) | |
554 | { | |
51dee2fe | 555 | Input_file_argument file(name, is_lib, "", this->position_options_); |
dbe717ef | 556 | this->inputs_.add_file(file); |
ead1e424 ILT |
557 | } |
558 | ||
61ba1cf9 ILT |
559 | // Handle the -l option, which requires special treatment. |
560 | ||
561 | int | |
562 | Command_line::process_l_option(int argc, char** argv, char* arg) | |
563 | { | |
564 | int ret; | |
565 | const char* libname; | |
566 | if (arg[1] != '\0') | |
567 | { | |
568 | ret = 1; | |
569 | libname = arg + 1; | |
570 | } | |
571 | else if (argc > 1) | |
572 | { | |
573 | ret = 2; | |
574 | libname = argv[argc + 1]; | |
575 | } | |
576 | else | |
577 | this->usage(_("missing argument"), arg); | |
578 | ||
ead1e424 | 579 | this->add_file(libname, true); |
61ba1cf9 ILT |
580 | |
581 | return ret; | |
582 | } | |
583 | ||
ead1e424 ILT |
584 | // Handle the --start-group option. |
585 | ||
586 | void | |
587 | Command_line::start_group(const char* arg) | |
588 | { | |
dbe717ef | 589 | if (this->inputs_.in_group()) |
ead1e424 | 590 | this->usage(_("may not nest groups"), arg); |
dbe717ef | 591 | this->inputs_.start_group(); |
ead1e424 ILT |
592 | } |
593 | ||
594 | // Handle the --end-group option. | |
595 | ||
596 | void | |
597 | Command_line::end_group(const char* arg) | |
598 | { | |
dbe717ef | 599 | if (!this->inputs_.in_group()) |
ead1e424 | 600 | this->usage(_("group end without group start"), arg); |
dbe717ef | 601 | this->inputs_.end_group(); |
ead1e424 ILT |
602 | } |
603 | ||
bae7f79e ILT |
604 | // Report a usage error. */ |
605 | ||
606 | void | |
61ba1cf9 | 607 | Command_line::usage() |
bae7f79e ILT |
608 | { |
609 | fprintf(stderr, | |
610 | _("%s: use the --help option for usage information\n"), | |
61ba1cf9 ILT |
611 | program_name); |
612 | gold_exit(false); | |
bae7f79e ILT |
613 | } |
614 | ||
615 | void | |
61ba1cf9 | 616 | Command_line::usage(const char* msg, const char *opt) |
bae7f79e ILT |
617 | { |
618 | fprintf(stderr, | |
619 | _("%s: %s: %s\n"), | |
61ba1cf9 | 620 | program_name, opt, msg); |
bae7f79e ILT |
621 | this->usage(); |
622 | } | |
623 | ||
624 | void | |
61ba1cf9 | 625 | Command_line::usage(const char* msg, char opt) |
bae7f79e ILT |
626 | { |
627 | fprintf(stderr, | |
628 | _("%s: -%c: %s\n"), | |
61ba1cf9 | 629 | program_name, opt, msg); |
bae7f79e ILT |
630 | this->usage(); |
631 | } | |
61ba1cf9 ILT |
632 | |
633 | } // End namespace gold. |